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module private tables

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Justin Lin
2020-03-06 09:14:42 +08:00
parent e9c61e1550
commit e99d71d3b9
1 changed files with 14 additions and 12 deletions
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26
src/experimental/_impl/_mz_hamiltonian_impl.scad
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@@ -30,24 +30,26 @@ function _mz_hamiltonian_corner_value(dots, x, y) =
)
c1 + c2 + c3 + c4;
_mz_hamiltonian_dir_table = [
[4, 0], [12, 0], [13, 0], // UP
[1, 1], [3, 1], [7, 1], // DOWN
[2, 2], [6, 2], [14, 2], // LEFT
[8, 3], [9, 3], [11, 3] // RIGHT
];
function _mz_hamiltonian_dir(cr_value) =
lookup(cr_value, [
[4, 0], [12, 0], [13, 0], // UP
[1, 1], [3, 1], [7, 1], // DOWN
[2, 2], [6, 2], [14, 2], // LEFT
[8, 3], [9, 3], [11, 3] // RIGHT
]);
lookup(cr_value, _mz_hamiltonian_dir_table);
_mz_hamiltonian_nxt_offset = [
[0, 1], // UP
[0, -1], // DOWN
[-1, 0], // LEFT
[1, 0] // RIGHT
];
function _mz_hamiltonian_travel(dot_pts, p, leng, i = 0) =
i == leng ? [] :
let(
dir_i = _mz_hamiltonian_dir(_mz_hamiltonian_corner_value(dot_pts, p[0], p[1])),
nxt_p = p + [
[0, 1], // UP
[0, -1], // DOWN
[-1, 0], // LEFT
[1, 0] // RIGHT
][dir_i]
nxt_p = p + _mz_hamiltonian_nxt_offset[dir_i]
)
concat(
[p], _mz_hamiltonian_travel(dot_pts, nxt_p, leng, i + 1)